baber/WOPTO huggingface dataset:
Patent CA-1094062-A (CA)
Inventor: SCHAEFFER HOWARD J
IPC: C07F9/6561
Filed: 1978-02-24
Granted: 1981-01-20
Abstract: ABSTRACT             This invention relates to a 9-hydroxyethoxymethyl guanine derivative of formula (I)                 (I) wherein W and Z are the same or different and each represents an hydrogen atom or pharmaceutically acceptable cation.  Provided are pharmaceutical compositions comprising a compound of formula (I) together with an acceptable carrier therefor, and the use of the compounds in medicine.  Also provided are methods for the synthesis of the novel compounds.  Compounds of formula (I) have good antiviral activity against several types of virus, in particular those in the Herpes family.
Patent CA-1072895-A (CA)
Inventor: MORTENSEN OLE J
IPC: B65D41/04
Filed: 1978-03-13
Granted: 1980-03-04
Abstract: Abstract of the Disclosure A molded plastic container for tobacco is des-cribed having a closure which retains moisture while allow-ing oxygen and carbon dioxide to pass out of the container. The container comprises an open top frusto-conical receptacle and a cover threadably connectable thereto.  The cover has a pair of downwardly projecting inner and outer concentric annular flanges between which the top edge of the receptacle fits.  These are arranged to provide a close fit such as to retain moisture while allowing oxygen and carbon dioxide to pass, thereby preventing the development of mould and or odours in the tobacco.
Patent CA-1106212-A (CA)
Inventor: CAMPBELL JOSEPH M
IPC: G10F1/02
Filed: 1978-05-01
Granted: 1981-08-04
Abstract: ABSTRACT OF THE DISCLOSURE       There is disclosed a circuit for controlling the expression of an electronically controlled keyboard instrument which  circuit works on the principle that by switching a solenoid on and off at a rapid rate and then varying the time on versus  the time off, the energy supplied to the solenoid varies and therefore the striking force of the piano is changed.  In accordance with the present invention, precise control over  the width of the pulses is achieved by first setting a set voltage level and then adding thereto increments of set voltage according to a binary weighting.  These voltages are then added and compared with a triangular voltage in a comparator. Both the up ramp portion and the down ramp portion of the triangular waveform are utilized and compared against the sum voltages.  The pulse width of the comparator output is thus a function of the intersection of the ramp voltage, both up and down ramps, with the sum voltage by varying the sum voltage in digital increments the width of the pulses is varied and these pulses which are supplied to the solenoid thus have the power or energy of the solenoid varied to vary the expression effects on the playback of the piano, for example.          The present invention is an improvement in that it permits simultaneous adjustment of both the leading and trailing edges of the pulses without varying the rate of the pulses.
Patent CA-1079974-A (CA)
Inventor: SASTRI SURI A
IPC: B24B3/48
Filed: 1978-05-17
Granted: 1980-06-24
Abstract: ABSTRACT OF THE DISCLOSURE          The present invention is concerned with processes fox microhoning cutting edges and especially those of razor blades, wherein the edges are subjected to sonic energy and especially ultrasonic energy while said edges are in contact with a slurry or dispersion of abrasive particles which have diameters of less than 3 microns,  The sonic or ultrasonic energy is emitted from a horn having a corrugated end and the ridges of said corrugated end are oriented so as to be perpendicular to the edges of the razor blades as they pass the horn, said blades being stacked in a magazine in which their edges are substantially parallel to one another and their flat surfaces in face-to-face relationship.      .
Patent CA-1075144-A (CA)
Inventor: DI ROSA GAETANO
IPC: B29B15/02
Filed: 1978-07-14
Granted: 1980-04-08
Abstract: ABSTRACT       A machine for cutting up lumps of crude rubber (synthetic or natural) and weighing out an accurate quantity to be fed to a mixer in accordance with a selected formula, comprising two band saws having special blades with teeth having no "set" and lying entirely within the plane of the blades; crude rubber blocks are fed to a first of two band saws on two conveyor belts which pass one to either side thereof, one of the two conveyors being laterally displaceable and able to convey one of the portions into which the block of crude rubber is cut by the first band saw to be cut by the second band saw,  the lateral position to which this portion is conveyed determining the relative size and therefore weight of the two pieces into which this portion is cut; all the cut portions and pieces are fed to an output conveyor which feeds them selectively to a hopper under the control or an automatic weighing machine.
Patent CA-1122557-A (CA)
Title: Process for producing high purity aromatic compounds
Inventor: MAYES WARDEN W
IPC: C07C15/02
Filed: 1978-07-24
Granted: 1982-04-27
Abstract: ABSTRACT OF THE DISCLOSURE       High-purity C7 and/or C8 aromatic hydrocarbons are pro-duced by reforming a C7 or C8 full boiling carbon number naphtha feed fraction or combinations thereof under reforming conditions of sufficient severity to convert essentially all of the non-aromatic portion of the naphtha feed boiling in the C7 to C8 aromatic boiling range to C7 and/or C8 aromatics, and then separa-ting the reformate by fractional distillation into high-purity fractions of C7 and/or C8 aromatic hydrocarbons.  Preferably, the C7 and/or C8 full boiling carbon number naphtha feed fraction is reformed in a plurality of reformer reaction stages with increas-ingly more severe conditions in order to maximize the yield of the C7 and C8 aromatics.
Patent CA-1090692-A (CA)
Title: Banding machine, in particular for banding bundles of  bank notes
Inventor: TIMMERBEIL KARL E
IPC: B65B13/02
Filed: 1978-09-07
Granted: 1980-12-02
Abstract: ABSTRACT OF THE DISCLOSURE     Banding Machine, in particular for banding bundles of bank notes A banding machine for banding bundles of bank notes, by means of ribbons of material, which are drawn off two supply rollers by the material to be packed, which has been inserted into the machine, and pass above and beneath the material to be packed to a sealing and cutting device, which forms a closing sealing seam for-the material to be packed. Bundles of different size can be handled because moveable stops move the bundle into a precise operating position.
Patent CA-1119706-A (CA)
Inventor: TAKEMURA YASUO
IPC: H04N5/347
Filed: 1978-10-03
Granted: 1982-03-09
Abstract: Abstract of the Disclosure In a solid-state imaging device, electric charges corresponding to an image are stored in potential wells formed in the semiconductor substrate of a charge transfer device by supplying driving signals of different phases of the electrodes.  The phases of the driving signals are changed in order somewhat to shift the potential walls during the charge storage period.
Patent CA-1121617-A (CA)
Inventor: WEISSMAN BERNARD
IPC: A61C13/263
Filed: 1978-10-12
Granted: 1982-04-13
Abstract: DENTAL ANCHOR            ABSTRACT OF THE DISCLOSURE           A dental anchor is disclosed comprising an elongated body member for insertion into a channel in a tooth in order to anchor a superstructure to the tooth.  The body member has at least one section with a substantially square cross-section.          The longitudinal corner portions of the section are provided with self tapping threads for threading into the channel.          Preferably, the body member includes two similar sections joined together by a reduced thickness portion so that one section can be bent relative to the other section when seated in the channel to provide an anchoring portion for the superstructure.  Two dental anchors may be joined together by a reduced thickness frangible member, where the thickness of the reduced thickness portion of each dental anchor has a thickness greater than any thickness of the frangible member.  Accordingly, the longitudinal side surfaces of the dental anchor are spaced from the walls of the channel when the anchor is seated in the channel to provide spaces therebetween, so that cement can be disposed in these spaces to fixedly secure the dental anchor in the channel.
Patent CA-1117454-A (CA)
Inventor: OPOKU SAM K
IPC: C10G1/04
Filed: 1978-11-20
Granted: 1982-02-02
Abstract: MEANS FOR REGULATING MIDDLINGS FLUID TO THE AIR SCAVENGING STEP OF A HOT WATER EXTRACTION PROCESS          Abstract of the Disclosure A process for separating oil from bituminous sands which comprises:  A) forming a mixture of the bituminous sands and water; B) passing the mixture into a separation zone;          C) settling the mixture in the separation zone in the range of 130° to 210°F to form:  an upper froth layer; a middlings layer comprising water, clay, and oil; and a sand tailings layer; D) separately removing from the separation zone the oil froth layer and the sand tailings layer; E) passing a stream of middlings from the middlings layer to a middlings storage zone;          F) passing a stream of middlings from the middlings storage zone to a scavenger zone and therein recovering an additional amount of oil froth; and G) removing from the scavenger zone and discarding from the system middlings material of depleted oil content comprising clay dispersed in water.
Patent CA-1141583-A (CA)
Inventor: BRUCK ROLF
IPC: G03C1/76
Filed: 1979-01-03
Granted: 1983-02-22
Abstract: PHOTOGRAPHIC MATERIAL                 Abstract of the Disclosure Photographic silver halide containing materials having improved mechanical and electrostatic properties are obtained by adding to at least one of the layers of the material a cross-linked polymer of acrylic acid and/or methacrylic acid which is prepared either (a) by inverse emulsion polymerization of acrylic and/or methacrylic acid monomers in the presence of polyfunctional cross-linking monomers and an emulsifier and breaking of the emulsion and redispersion of the polymer particles in water; or (3) by emulsion polymerization of aliphatic esters of acrylic and/or methacrylic acid in water in the presence of polyfunctional cross-linking monomers and of an emulsifier, followed by saponification of the polymer.
Patent CA-1100792-A (CA)
Inventor: MAIN JOHN A
IPC: B23B5/00
Filed: 1979-03-06
Granted: 1981-05-12
Abstract: ABSTRACT OF THE DISCLOSURE     A method and a machine for performing final finishing operations upon a wheel to minimize both axial and radial run-out.  The assembled wheel, including the rim and attached wheel center is placed in the machine and the rim and particularly the bead seat portion is deformed both radially and axially into a true condition.  While held in this condition, the center hole, the bolt hole chamfers, and the axial locating surfaces are finish machined.
Patent CA-1094598-A (CA)
Inventor: TURNER LARRY G
IPC: F16L15/00
Filed: 1979-03-14
Granted: 1981-01-27
Abstract: FAUCET NUT ASSEMBLY               Abstract of the Disclosure A faucet tail nut having a frangible bore part for the purpose of accommodating multiple sizes of tubing.
Patent CA-1131337-A (CA)
Inventor: DUNHAM ROBERT W
IPC: H02H3/10
Filed: 1979-03-15
Granted: 1982-09-07
Abstract: Abstract of the Disclosure A circuit breaker having an electronic fault sensing and trip initiating unit which provides increased versatility and ability to coordinate the circuit breaker with other interrupti. and protective devices in a wide variety of electrical distribu-tion systems.  Electronic circuits and components are provided to vary the ampere rating of the breaker, to adjust current carrying capacity, to provide a long time delay trip, a short time delay trip and an instantaneous trip depending on the amplitude of high fault currents, to provide a ground fault trip, to shorten or lengthen the trip time for short time delay faults and for ground faults, and to provide shunt trip capability.  The tripping mechanism is magnetic and mechanical, and includes a plunger movable between a trip and non-trip position controlled by an electronic switch in the electronic circuitry, and a toggle mechanism which is unlatched by the plunger when it moves to the trip position.  A bimetal trip mechanism is provided as back-up protection if the ambient temperature not sensed by the electronic circuitry exceeds a pre-determined level.
Patent CA-1112472-A (CA)
Inventor: GORDON KEVIN S
IPC: G01N21/17
Filed: 1979-03-21
Granted: 1981-11-17
Abstract: METHODS FOR TESTING OPTICAL FIBRES          Abstract of the Disclosure The invention uses the phenomenon of self-coupling by which light emitted from, and reflected back into, a laser produces self-coupling with consequent change in lasing activity.  The invention proposes using the laser as a detector by inducing the self-coupling and monitoring the change in lasing activity.  The invention enables fibre length, and the position of a reflective discontinuity in a fibre to be determined without the sophisticated and costly equipment required by current optical time domain reflectometry techniques.                            -i-
Patent CA-1129809-A (CA)
Title: Electrolysis electrode with coating of tin dioxide  and platinum group metal
Inventor: DE NORA VITTORIO
IPC: C25B11/06
Filed: 1979-03-27
Granted: 1982-08-17
Abstract: ELECTRODES FOR ELECTROLYTIC PROCESSES, ESPECIALLY PERCHLORATE PRODUCTION ABSTRACT              An electrode especially for the production of chlorates and perchlorates comprising an electrically-conductive corrosion-resistant substrate having an electrocatalytic coating which is preferably a mixture of 40 to 85 parts by weight of platinum, 0 to 20 parts by weight of palladium and 15 to 40 parts by weight (as tin metal) of tin dioxide.
Patent CA-1119335-A (CA)
Inventor: SOMMER NEITHART
IPC: C08C2/00
Filed: 1979-05-18
Granted: 1982-03-02
Abstract: Abstract A single-stage process is disclosed for preparing a pulverulent filled rubber by combining a rubber latex, solution or emulsion with A filler suspension, waterglass and a water-soluble aluminium salt at a pH value of 3.0 to 3.7 maintained during the reaction by the addition of mineral acid. The filled rubber thereby obtained is separated from the aqueous phase and dried.  The product can be used directly in the manufacture of vulcani ed rubbers possessing equivalent properties to conventionally produced vulcan-ised rubbers.
Patent CA-1141118-A (CA)
Inventor: PUMP WICHARD
IPC: B29C47/10
Filed: 1979-07-20
Granted: 1983-02-15
Abstract: FOAMED POLYETHYLENE FILMS                Abstract of the Disclosure A process for the production of foamed films of polyethylene or ethylene vinyl acetate copolymers using metal salts of aliphatic fatty acids as additives.     Le A 18 934 :     .
Patent CA-1132009-A (CA)
Inventor: ETLIN VLADIMIR LISLE AVENUE FA
IPC: B05B15/04
Filed: 1979-08-20
Granted: 1982-09-21
Abstract: - 1 -Abstract The purpose of the invention is to provide a method and the required apparatus to coat articles of any shape and size with a layer of protective coating in an effective, energy-efficient, safe and economical way, omitting the use of electrostatic generators and avoiding contamination of the environment and loss in materials. The coating agent contemplated is powdered plastic which is introduced into a structure (see Figure 3) which is in the form of a main closed circuit loop (8) in which a blower (7) circulates air carrying coating agent until it has acquired substantial electrostatic charge, which can be increased by the addition in that loop of a section (13) of increasing diameter in the direction of the flow of powder. When the requisite electrostatic charge has been achieved, valves (17) (18) (26) and (27) are opened putting the main loop (8) into communication with branch circuits (16) and (25), which contain articles to be coated (23) and (32). The powder and air flow into those branch circuits and the powder coats the articles (23) and (32) by adhering to them by electrostatic attraction. Any powder that is not used is then returned in the flow of circulating air for reuse. After removing articles (23) and (32) from communication with the loop (8) and heating these articles to melt said powder the process is completed.
Patent CA-1133707-A (CA)
Title: Artificial barrier for installing oil drilling  equipment in ice covered sea areas
Inventor: OSHIMA MASANAO
IPC: E02B17/00
Filed: 1979-11-28
Granted: 1982-10-19
Abstract: Abstract of the Disclosure:      An artificial island for installing oil drilling equipment in ice covered sea areas, comprising barricades against ice which surround oil drilling equipment installed in ice covered sea-water and whose respective top portions are projected above the surface of the sea-water, means provided at the bottom portions of the barricades so as to fix them to the sea-bottom, and inclined ice breaking walls provided at the outer sides of the barricades.
Patent CA-1135387-A (CA)
Inventor: RABINOWITZ PAUL
IPC: H01S3/30
Filed: 1979-12-10
Granted: 1982-11-09
Abstract: ABSTRACT OF THE DISCLOSURE         A device is disclosed for producing intense 16 micron radiation in which stimulated rotational Raman scattering takes place in parahydrogen on an off-axis path between a pair of spherical mirrors.
Patent CA-1113722-A (CA)
Inventor: NOVAK MILAN
IPC: A01M23/34
Filed: 1980-01-11
Granted: 1981-12-08
Abstract: ABSTRACT          There is provided an animal trap construction, in which a coil spring is adapted, upon springing of the trap, to cause a swing arm to pivot upwardly through a vertical arc, and tighten a noose around the leg of an animal.  The coil spring is contained between two upstanding brackets, and an end portion of the swing arm, bent at right angles to the latter, passes centrally through the spring, and passes through the two brackets.  A first bushing of cylindrical form is fixed within the end of the spring remote from the bend location between the swing arm and its end portion, the first bushing having a smaller-diameter cylindrical extension passing through an aperture in the respective bracket.  A second bushing is provided at the other end of the coil spring, the second bushing having a flange which is adapted to be located between the coil spring and the respective bracket.  The end portion of the swing arm passes through both bushings.  The second bushing has a rib of annular form, extending toward and contacting the respective bracket, in order to reduce friction between the second bushing and its respective bracket.
Patent CA-1138697-A (CA)
Inventor: BAEHR THEODOR
IPC: D21B1/16
Filed: 1980-01-18
Granted: 1983-01-04
Abstract: ABSTRACT OF THE DISCLOSURE Wood is pulped by the action of a grinding member in the presence of a liquid.  In order that the process can be carried out at a temperature above 100°C, either under pressure or at atmospheric pressure, a liquid is used which has a boiling point at atmospheric pressure above 100°C.  Previous-ly, water has been employed as the liquid.
Patent CA-1150104-A (CA)
Inventor: BRYAN PAUL J
IPC: F42D1/04
Filed: 1980-02-21
Granted: 1983-07-19
Abstract: E.I. du Pont de Hemoura and Company (Bryan, Paul J.) ABSTRACT       A non-electric delay detonator adapted for field-assembly with a low-energy detonating cord has an expansion shell into which the cord is inserted at the time of use.  The pressure pulse resulting from the detonation of the cord causes the shell to expand and an ignition charge to be actuated as a result of sudden compression between the expansion shell and a rigid capsule.  The burning ignition charge ignites a delay charge, which in turn ignites a priming charge, causing the base charge to detonate.  The presence of ignition charge in an annular spacing between the shell and capsule walls, as well as between the shell and capsule ends, and the proper positioning of cord-gripping means in the shell cavity, assure actuation of the ignition charge whether or not the cord is shoved to the bottom of the shell.
Patent CA-1141870-A (CA)
Inventor: NOZAKI TAKAO
IPC: C01B21/068
Filed: 1980-03-06
Granted: 1983-02-22
Abstract: METHOD FOR FORMING AN INSULATING FILM ON               A SEMICONDUCTOR SUBSTRATE SURFACE     ABSTRACT        In a method for forming an insulating film on a semiconductor substrate surface, the silicon nitride of the insulating film has been formed by a plasma CVD or a direct nitridation.  In the present invention, a gas plasma of a nitrogen-containing gas is generated in a direct nitridation reaction chamber, and the semiconductor silicon body is heated to a temperature of from approximately 800 to approximately 1300°C within the gas plasma atmosphere, thereby forming the silicon nitride film.  The resulting silicon nitride film has a dense structure and a low oxygen concentration and a thick silicon nitride film is formed in a short period of direct nitridation of silicon.
Patent CA-1137305-A (CA)
Inventor: BARKER DEREK
IPC: F24H9/18
Filed: 1980-03-14
Granted: 1982-12-14
Abstract: ABSTRACT OF THE DISCLOSURE      A fluidised bed combustor has its fluidising chamber in thermal contact with a surrounding heat exchanger.  A lined base portion of the chamber capable of containing the bulk of bed material while the bed is slumped is adapted to retard heat transfer from the bed. Thermostat linked devices in the bed and external load are arranged to switch the fuel and gas supplies to the bed so as to enable normal bed temperature to be attained without excessive heat removal to the heat exchanger.
Patent CA-1130172-A (CA)
Inventor: MANINI BENITO
IPC: D03D37/00
Filed: 1980-04-10
Granted: 1982-08-24
Abstract: Abstract of the Disclosure A circular loom is disclosed for tubular fabric consist-ing essentially of threads and/or strips of synthetic, artificial and natural substances, said loom being of the vertical heald type with healds arranged on concentric rings, with the draft and the winding up of the flattened fabric being formed on a fabric gaug-ing cylinder arranged downstream of the shuttles, characterized in that said loom comprises one single rotary positive cam with a double track for the control of the alternate motion of the healds, said cam consisting essentially of a hollow cylinder turning coaxially inside the fabric-gauging cylinder and on whose outside cylindrical surface there are provided two closed track guide cams having a substantially helicoidal development, of which one is the cam controlling the motion of the external healds, while the other controls the internal healds, those guiding cams being associated with guide-pads or cam followers which are integral with saddles carrying the healds mounted slidably in fixed verti-cal guides, thereby  imparting to the two series of healds their alternate up-and-down motion, said healds being, moreover, axially constrained by elastic or resilient means to the corresponding supporting saddles so that they may be all blocked automatically in their lower position by the hooking in of their lower ends on corresponding oscillating hooks mounted displaceably in a coaxial alignment with the healds themselves, so as to retain all the warp threads on a level below the plane of sliding of the shuttles.     -i-